Warner Brothers has released an updated version of its LEGO Harry Potter game for iOS. While the game received a lot of critical acclaim when it launched a few weeks ago, many App Store comments suggested users found the controls to be a bit too difficult. As a result, version 1.1 of LEGO Harry Potter: Years 1-4 comes with a virtual D-pad option, which lets you control Harry and his friends by moving your thumb along the lower left corner of the screen, while launching spells by pressing buttons on the right.

The controls disappear when you’re not using them, so they don’t cover much of the playing field.

The update also adds support for older iOS devices. Basically as long as you’re running iOS 4.1 and up, you should be able to play the game. It now supports the iPod touch 2G and up, and the iPhone 3G and up.

Warner Brothers says the next major update will add support for Apple’s Game Center, bringing achievements and leaderboards.